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clm - CELL MEMBRANES s The Fluid-Mosaic Model This is an...

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CELL MEMBRANES The Fluid-Mosaic Model This is an introduction to the structure and function of cell membranes. It is designed to be a self-contained unit with links to other, related material.
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THE FUNCTION OF CELL MEMBRANES Compartmentalization of tissues Regulation of cell contents Provides surface for enzymes, receptors, recognition, etc. It is thought by some that the spontaneous organization of membranes played an important role in the evolution of life. It is thought by some that the spontaneous organization of membranes played an important role in the evolution of life .
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PHOSPHOLIPIDS: The “Backbone” of the Membrane Cartoon of a phospholipid molecule This cartoon depicts the basic This cartoon depicts the basic amphipathic* amphipathic* structure common structure common to all phospholipids to all phospholipids * both polar and non-polar regions Fatty acids Glycerol plus polar side group
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WATER MOLECULES ARE POLAR Structure of water and the Cartoon version Water is a dipole O H H + + d d/2 d/2 + Oxygen pulls electrons towards itself causing a charge imballance (d-)
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